Impurity filter for thermal insulation construction of water-based paint

The utility model discloses an impurity filter for water-based paint thermal insulation construction, which is applied to the field of paint construction. The motor rotates to drive the reciprocating lead screw to rotate, the reciprocating lead screw rotates to drive the guide block to enable the sliding plate to reciprocate, the sliding plate reciprocates to drive the pressing mechanism to reciprocate, the pressing mechanism reciprocates to drive the cleaning brush to reciprocate, and the filter screen is cleaned, so that the anti-blocking purpose can be achieved, and the filter screen is prevented from being blocked; the rotating disc rotates by rotating a rotating rod, the rotating disc rotates to drive a guide groove to move, the guide groove moves to drive a sliding rod to move, the sliding rod moves to drive a connecting rod to move, the connecting rod moves to drive a clamping rod to move, and the clamping rod moves to enable the clamping rod to be disengaged from the inner wall of the filter box; and